SEXUAL REPRODUCTION

Occurrence Ectocarpus is a brown alga. It is abundantly found throughout the world in cold waters. A few species occur in fresh waters. The plant grows attached to rocks and stones along coasts. Some species are epiphytes on other algae like members of Fucales

Division Chlorophyta Class Chlorophyceae Order Conjugates Sub-order Zygnemoideae Family Zygnemaceae Genus Spirogyra Occurrence Spirogyra is a large genus. It is widely distributed and found throaghout the world. It has of about 300 species. It is found in fresh water. It grows as free floating

Meiosis is a type of cell division in which number chromosome reduced to one half in the daughter cell. Sexual reproduction requires a genetic ontribution from two different sex cells. Egg and sperm cells are specialized sex ells. They are called gametes. A male